Zork I, II, and III, classic text-based adventure games, are now open source, allowing for their preservation and study. Infocom developed Zork in the late 1970s and early 1980s, utilizing the Z-Machine, a custom virtual machine that enabled the games to run on various platforms like Apple IIs and IBM PCs. The decision to split the original game into three parts made it more accessible and marked it as one of the first cross-platform games. This historical significance is a key reason for making the source code available. The open-source initiative is a collaboration with Jason Scott from the Internet Archive, involving direct contributions to the historical repositories for Zork. The repositories now include the source code for all three games, along with documentation and a clear MIT license. This approach prioritizes the code itself, excluding commercial materials and trademarks to maintain historical integrity. The release enables not just gameplay but also research into the game's development. Today, Zork is still playable, both commercially through platforms like Good Old Games and via local compilation using modern tools like ZILF, which converts ZIL files into runnable formats. The authors encourage contributions to the repositories under the MIT License, aiming to keep the focus on education and exploration rather than modernization. Zork's legacy goes beyond gaming; it’s a testament to the power of imagination and engineering, preserved for future generations.